package com.example.contactcloud;

import java.util.ArrayList;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.BasicResponseHandler;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.*;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.ParseException;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.widget.EditText;
import android.widget.TextView;
/**
 * Activity which displays a login screen to the user, offering registration as
 * well.
 */


public class LoginActivity extends Activity {
	
	static final String EXTRA_MESSAGE="";
	static final String EXTRA_MESSAGE2="";
	String loginStatus="not";
	static int globalTheme = android.R.style.Theme_Holo;

	/**
	 * A dummy authentication store containing known user names and passwords.
	 * TODO: remove after connecting to a real authentication system.
	 */
	private static final String[] DUMMY_CREDENTIALS = new String[] {
			"foo@example.com:hello", "bar@example.com:world" };

	/**
	 * The default email to populate the email field with.
	 */
	public static final String EXTRA_EMAIL = "com.example.android.authenticatordemo.extra.EMAIL";

	/**
	 * Keep track of the login task to ensure we can cancel it if requested.
	 */
	private UserLoginTask mAuthTask = null;

	/**
	 * URL to connect to the cloud server
	 */
	private static final String PHP_URL = "http://softeng.cs.uwosh.edu/students/baurj00/PHPServer.php";
	
	
	// Values for email and password at the time of the login attempt.
	private String mEmail;
	private String mPassword;

	// UI references.
	private EditText mEmailView;
	private EditText mPasswordView;
	private View mLoginFormView;
	private View mLoginStatusView;
	private TextView mLoginStatusMessageView;
	
	
	

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		setTheme(LoginActivity.globalTheme);
		super.onCreate(savedInstanceState);

		setContentView(R.layout.activity_login);
		
		

		// Set up the login form.
		mEmail = getIntent().getStringExtra(EXTRA_EMAIL);
		mEmailView = (EditText) findViewById(R.id.username);
		mEmailView.setText(mEmail);

		mPasswordView = (EditText) findViewById(R.id.password);
		mPasswordView
				.setOnEditorActionListener(new TextView.OnEditorActionListener() {
					@Override
					public boolean onEditorAction(TextView textView, int id,
							KeyEvent keyEvent) {
						if (id == R.id.login || id == EditorInfo.IME_NULL) {
							attemptLogin();
							return true;
						}
						return false;
					}
				});

		mLoginFormView = findViewById(R.id.login_form);
		mLoginStatusView = findViewById(R.id.login_status);
		mLoginStatusMessageView = (TextView) findViewById(R.id.login_status_message);

		findViewById(R.id.sign_in_button).setOnClickListener(
				new View.OnClickListener() {
					@Override
					public void onClick(View view) {
						attemptLogin();
					}
				});
		
		findViewById(R.id.skipbtn).setOnClickListener(
				new View.OnClickListener() {
					@Override
					public void onClick(View view) {
						LoginActivity.this.finish();
						Intent myIntent = new Intent(LoginActivity.this, AllContacts.class); 
						myIntent.putExtra(EXTRA_MESSAGE, "false");
						startActivityForResult(myIntent, 0);
					}
				});
		
		findViewById(R.id.registerBtn2).setOnClickListener(
				new View.OnClickListener() {
					@Override
					public void onClick(View view) {
						Intent myIntent = new Intent(LoginActivity.this, RegisterActivity.class); 
						startActivityForResult(myIntent, 0);
					}
				});
	}

	
	@Override
	protected void onResume(){
		super.onResume();
		Intent i = getIntent();
		loginStatus = i.getStringExtra(EXTRA_MESSAGE2);
	}
	

	/**
	 * Attempts to sign in or register the account specified by the login form.
	 * If there are form errors (invalid email, missing fields, etc.), the
	 * errors are presented and no actual login attempt is made.
	 */
	public void attemptLogin() {
		if (mAuthTask != null) {
			return;
		}

		// Reset errors.
		mEmailView.setError(null);
		mPasswordView.setError(null);

		// Store values at the time of the login attempt.
		mEmail = mEmailView.getText().toString();
		mPassword = mPasswordView.getText().toString();

		boolean cancel = false;
		View focusView = null;

		// Check for a valid password.
		if (TextUtils.isEmpty(mPassword)) {
			mPasswordView.setError(getString(R.string.error_field_required));
			focusView = mPasswordView;
			cancel = true;
		} else if (mPassword.length() < 4) {
			mPasswordView.setError(getString(R.string.error_invalid_password));
			focusView = mPasswordView;
			cancel = true;
		}

		// Check for a valid email address.
		if (TextUtils.isEmpty(mEmail)) {
			mEmailView.setError(getString(R.string.error_field_required));
			focusView = mEmailView;
			cancel = true;
		} else if (!mEmail.contains("@")) {
			mEmailView.setError(getString(R.string.error_invalid_email));
			focusView = mEmailView;
			cancel = true;
		}

		if (cancel) {
			// There was an error; don't attempt login and focus the first
			// form field with an error.
			focusView.requestFocus();
		} else {
			// Show a progress spinner, and kick off a background task to
			// perform the user login attempt.
			mLoginStatusMessageView.setText(R.string.login_progress_signing_in);
			showProgress(true);
			mAuthTask = new UserLoginTask();
			mAuthTask.execute(mEmail, mPassword, null);
		}
	}

	/**
	 * Shows the progress UI and hides the login form.
	 */
	@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
	private void showProgress(final boolean show) {
		// On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow
		// for very easy animations. If available, use these APIs to fade-in
		// the progress spinner.
		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
			int shortAnimTime = getResources().getInteger(
					android.R.integer.config_shortAnimTime);

			mLoginStatusView.setVisibility(View.VISIBLE);
			mLoginStatusView.animate().setDuration(shortAnimTime)
					.alpha(show ? 1 : 0)
					.setListener(new AnimatorListenerAdapter() {
						@Override
						public void onAnimationEnd(Animator animation) {
							mLoginStatusView.setVisibility(show ? View.VISIBLE
									: View.GONE);
						}
					});

			mLoginFormView.setVisibility(View.VISIBLE);
			mLoginFormView.animate().setDuration(shortAnimTime)
					.alpha(show ? 0 : 1)
					.setListener(new AnimatorListenerAdapter() {
						@Override
						public void onAnimationEnd(Animator animation) {
							mLoginFormView.setVisibility(show ? View.GONE
									: View.VISIBLE);
						}
					});
		} else {
			// The ViewPropertyAnimator APIs are not available, so simply show
			// and hide the relevant UI components.
			mLoginStatusView.setVisibility(show ? View.VISIBLE : View.GONE);
			mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
		}
	}

	/**
	 * Represents an asynchronous login/registration task used to authenticate
	 * the user.
	 */
	public class UserLoginTask extends AsyncTask<String, String, Boolean> {
		@Override
		protected Boolean doInBackground(String... params) {
			// TODO: attempt authentication against a network service.
			Boolean success = false;
			ConnectivityManager connMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
			NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
			
			if(networkInfo != null && networkInfo.isConnected())
			{
				ArrayList<NameValuePair> n = new ArrayList<NameValuePair>(1);
				n.add(new BasicNameValuePair("username", params[0]));
				
				HttpClient httpClient = new DefaultHttpClient();
				HttpPost httppost = new HttpPost(PHP_URL);
				
				try
				{
					httppost.setEntity(new UrlEncodedFormEntity(n));
					ResponseHandler<String> respondHandler = new BasicResponseHandler();
					String response = httpClient.execute(httppost, respondHandler);

					//Parse JSON Data
					String id_pass = null;

					try{
						
						JSONArray jArray = new JSONArray(response);
						JSONObject json_data=null;
						json_data = jArray.getJSONObject(0);
						id_pass = json_data.getString("pass");
			      	
					}catch(JSONException e1){
						e1.printStackTrace();
					}catch (ParseException e1){
						e1.printStackTrace();
					}
				
					if(id_pass.equals(params[1]))
					{
						success = true;
					}
	
				}
				catch(Exception e){
					
				}
			}
			
			// TODO: register the new account here.
			return success;
		}

		@Override
		protected void onPostExecute(final Boolean success) {
			mAuthTask = null;
			showProgress(false);

			if (success) {
				Intent myIntent = new Intent(LoginActivity.this, AllContacts.class);
				
				try{
					Intent i = getIntent();
					loginStatus = i.getStringExtra(EXTRA_MESSAGE2);
					
					if (loginStatus.equals("first")){
						myIntent.putExtra(EXTRA_MESSAGE, "first");
					}
				}
				catch(Exception e){
					System.out.println("Not first time logging in");
					myIntent.putExtra(EXTRA_MESSAGE, "true");
				}
				
				//myIntent.putExtra(EXTRA_MESSAGE2, loginStatus);
				startActivityForResult(myIntent, 0);
				finish();
			} else {
				mPasswordView
						.setError(getString(R.string.error_incorrect_password));
				mPasswordView.requestFocus();
			}
		}

		@Override
		protected void onCancelled() {
			mAuthTask = null;
			showProgress(false);
		}
	}
}
